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Luminance imaging photometer
Luminance is the photometric measurement of the intensity of light emitted or scattered by a particular area.
The unit of brightness is Candela per square meter (Cd / m2)
Emitted and reflected brightness
How does the brightness meter work?
The brightness of the image being measured is imaged onto the COMS sensor through the lens and V(λ) filter, and the V(λ) filter corrects the visual sensitivity to the human eye.